TY - GEN
T1 - RF subsampling GNSS receiver
T2 - 2011 23rd International Conference on Microelectronics, ICM 2011
AU - Barrak, Rim
AU - Labidi, Imen
AU - Ghazel, Adel
AU - Muller, Muriel
AU - Samama, Nel
PY - 2011/12/1
Y1 - 2011/12/1
N2 - The American GPS and Russian GLONASS satellite positioning systems have been operational since the 90's. Other GNSS systems are under development like European Galileo and Chinese Compass systems. Several mass market GNSS products allow users to have their positions, speed and time, but the majority of them are limited to a single standard and do not allow positioning in no coverage areas. Hence, it is very interesting to have a single receiver that includes several positioning systems which is capable of providing precise position indoors and outdoors. This paper deals with a new GNSS receiver architecture for GPS, GLONASS and Galileo radio signals characterized by low power and high sensitivity, also capable of providing outdoor to indoor positioning service. The proposed architecture is based on an RF subsampling down-conversion topology. A fixed subsampling frequency is chosen to properly down-convert the three constellations RF bands to a fixed IF band, which relaxes the IF filter design. A Direct Digital Converter is then proposed to perform quadrature down-conversion to baseband. Simulation results show high gain and low noise for the designed RF front-end and validate subsampling frequency choice through multiband GNSS receiver condition.
AB - The American GPS and Russian GLONASS satellite positioning systems have been operational since the 90's. Other GNSS systems are under development like European Galileo and Chinese Compass systems. Several mass market GNSS products allow users to have their positions, speed and time, but the majority of them are limited to a single standard and do not allow positioning in no coverage areas. Hence, it is very interesting to have a single receiver that includes several positioning systems which is capable of providing precise position indoors and outdoors. This paper deals with a new GNSS receiver architecture for GPS, GLONASS and Galileo radio signals characterized by low power and high sensitivity, also capable of providing outdoor to indoor positioning service. The proposed architecture is based on an RF subsampling down-conversion topology. A fixed subsampling frequency is chosen to properly down-convert the three constellations RF bands to a fixed IF band, which relaxes the IF filter design. A Direct Digital Converter is then proposed to perform quadrature down-conversion to baseband. Simulation results show high gain and low noise for the designed RF front-end and validate subsampling frequency choice through multiband GNSS receiver condition.
KW - RF subsampling
KW - indoor and outdoor positioning
KW - multiband GNSS receiver
U2 - 10.1109/ICM.2011.6177412
DO - 10.1109/ICM.2011.6177412
M3 - Conference contribution
AN - SCOPUS:84860652351
SN - 9781457722073
T3 - Proceedings of the International Conference on Microelectronics, ICM
BT - 2011 International Conference on Microelectronics, ICM 2011
Y2 - 19 December 2011 through 22 December 2011
ER -